[Stable-Only] Setting train deps

Depends-On: https://review.opendev.org/c/openstack/tripleo-ci/+/841762

Signed-off-by: Jiri Podivin <jpodivin@redhat.com>
Change-Id: Id621332124817fba0d0e84bde0d8d44fe324f3ec

.zuul.yaml

@@ -4,13 +4,17 @@
     run: playbooks/validations-libs-functional.yaml
     post-run: playbooks/post.yaml
     timeout: 7200
+    branches: stable/1.6
+    override-checkout: stable/train
     required-projects:
+      - name: openstack/requirements
+        override-checkout: stable/train
       - openstack/validations-libs
       - openstack/validations-common
       - name: openstack/openstacksdk
-        override-checkout: master
+        override-checkout: stable/train
       - name: opendev.org/openstack/devstack
-        override-checkout: master
+        override-checkout: stable/train
     vars:
       devstack_localrc:
         USE_PYTHON3: true
@@ -26,6 +30,7 @@
     run: playbooks/reqcheck.yaml
     timeout: 1600
     voting: true
+    override-checkout: stable/train
     required-projects:
       - openstack/validations-libs
     files:
@@ -34,6 +39,7 @@
 - job:
     name: tripleo-ci-centos-8-standalone-validation-libs
     parent: tripleo-ci-centos-8-standalone
+    branches: stable/1.6
     vars:
       featureset: '052'
       validate_services: true
@@ -46,10 +52,14 @@
     check:
       jobs:
         - validations-libs-reqcheck
-        - openstack-tox-linters
-        - openstack-tox-cover
-        - openstack-tox-py36
-        - openstack-tox-py39
+        - openstack-tox-linters:
+            override-checkout: stable/train
+        - openstack-tox-cover:
+            override-checkout: stable/train
+        - openstack-tox-py36:
+            override-checkout: stable/train
+        - openstack-tox-py39:
+            override-checkout: stable/train
         - tripleo-ci-centos-8-standalone-validation-libs: &standalone_consumer_job_params
             vars: &standalone_consumer_job_vars
               build_container_images: true
@@ -64,6 +74,7 @@
               - ^validations_libs/.*
         - validations-libs-functional
         - tripleo-ci-centos-8-undercloud-containers: &undercloud_containers_job_params
+            override-checkout: stable/train
             dependencies:
               - openstack-tox-linters
               - openstack-tox-cover

tox.ini

@@ -25,10 +25,9 @@ setenv =
 commands =
   stestr run --slowest --color {posargs}
 deps =
-    -c {env:TOX_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
+    -c {env:TOX_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/stable/train/upper-constraints.txt}
     -r {toxinidir}/requirements.txt
     -r {toxinidir}/test-requirements.txt
-    -r {toxinidir}/doc/requirements.txt
 whitelist_externals = bash
 
 [testenv:bindep]